Makefile

   1 # Makefile for buildroot
   2 #
   3 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
   4 # Copyright (C) 2006-2014 by the Buildroot developers <buildroot@uclibc.org>
   5 # Copyright (C) 2014 by the Buildroot developers <buildroot@buildroot.org>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20 #
  21
  22 #--------------------------------------------------------------
  23 # Just run 'make menuconfig', configure stuff, then run 'make'.
  24 # You shouldn't need to mess with anything beyond this point...
  25 #--------------------------------------------------------------
  26
  27 # Set and export the version string
  28 export BR2_VERSION:=2014.05-git
  29
  30 # Check for minimal make version (note: this check will break at make 10.x)
  31 MIN_MAKE_VERSION=3.81
  32 ifneq ($(firstword $(sort $(MAKE_VERSION) $(MIN_MAKE_VERSION))),$(MIN_MAKE_VERSION))
  33 $(error You have make '$(MAKE_VERSION)' installed. GNU make >= $(MIN_MAKE_VERSION) is required)
  34 endif
  35
  36 export HOSTARCH := $(shell uname -m | \
  37         sed -e s/i.86/x86/ \
  38             -e s/sun4u/sparc64/ \
  39             -e s/arm.*/arm/ \
  40             -e s/sa110/arm/ \
  41             -e s/ppc64/powerpc/ \
  42             -e s/ppc/powerpc/ \
  43             -e s/macppc/powerpc/\
  44             -e s/sh.*/sh/)
  45
  46 # Parallel execution of this Makefile is disabled because it changes
  47 # the packages building order, that can be a problem for two reasons:
  48 # - If a package has an unspecified optional dependency and that
  49 #   dependency is present when the package is built, it is used,
  50 #   otherwise it isn't (but compilation happily proceeds) so the end
  51 #   result will differ if the order is swapped due to parallel
  52 #   building.
  53 # - Also changing the building order can be a problem if two packages
  54 #   manipulate the same file in the target directory.
  55 #
  56 # Taking into account the above considerations, if you still want to execute
  57 # this top-level Makefile in parallel comment the ".NOTPARALLEL" line and
  58 # build using the following command:
  59 #       make BR2_JLEVEL= -j$((`getconf _NPROCESSORS_ONLN`+1))
  60 .NOTPARALLEL:
  61
  62 # absolute path
  63 TOPDIR:=$(shell pwd)
  64 CONFIG_CONFIG_IN=Config.in
  65 CONFIG=support/kconfig
  66 DATE:=$(shell date +%Y%m%d)
  67
  68 # Compute the full local version string so packages can use it as-is
  69 # Need to export it, so it can be got from environment in children (eg. mconf)
  70 export BR2_VERSION_FULL:=$(BR2_VERSION)$(shell $(TOPDIR)/support/scripts/setlocalversion)
  71
  72 noconfig_targets:=menuconfig nconfig gconfig xconfig config oldconfig randconfig \
  73         defconfig %_defconfig allyesconfig allnoconfig silentoldconfig release \
  74         randpackageconfig allyespackageconfig allnopackageconfig \
  75         source-check print-version olddefconfig
  76
  77 # Strip quotes and then whitespaces
  78 qstrip=$(strip $(subst ",,$(1)))
  79 #"))
  80
  81 # Variables for use in Make constructs
  82 comma:=,
  83 empty:=
  84 space:=$(empty) $(empty)
  85
  86 ifneq ("$(origin O)", "command line")
  87 O:=output
  88 CONFIG_DIR:=$(TOPDIR)
  89 NEED_WRAPPER=
  90 else
  91 # other packages might also support Linux-style out of tree builds
  92 # with the O=<dir> syntax (E.G. Busybox does). As make automatically
  93 # forwards command line variable definitions those packages get very
  94 # confused. Fix this by telling make to not do so
  95 MAKEOVERRIDES =
  96 # strangely enough O is still passed to submakes with MAKEOVERRIDES
  97 # (with make 3.81 atleast), the only thing that changes is the output
  98 # of the origin function (command line -> environment).
  99 # Unfortunately some packages don't look at origin (E.G. uClibc 0.9.31+)
 100 # To really make O go away, we have to override it.
 101 override O:=$(O)
 102 CONFIG_DIR:=$(O)
 103 # we need to pass O= everywhere we call back into the toplevel makefile
 104 EXTRAMAKEARGS = O=$(O)
 105 NEED_WRAPPER=y
 106 endif
 107
 108 # bash prints the name of the directory on 'cd <dir>' if CDPATH is
 109 # set, so unset it here to not cause problems. Notice that the export
 110 # line doesn't affect the environment of $(shell ..) calls, so
 111 # explictly throw away any output from 'cd' here.
 112 export CDPATH:=
 113 BASE_DIR := $(shell mkdir -p $(O) && cd $(O) >/dev/null && pwd)
 114 $(if $(BASE_DIR),, $(error output directory "$(O)" does not exist))
 115
 116
 117 # Handling of BR2_EXTERNAL.
 118 #
 119 # The value of BR2_EXTERNAL is stored in .br-external in the output directory.
 120 # On subsequent invocations of make, it is read in. It can still be overridden
 121 # on the command line, therefore the file is re-created every time make is run.
 122 #
 123 # When BR2_EXTERNAL is not set, the .br-external file is removed and we point
 124 # to support/dummy-external. This makes sure we can unconditionally include the
 125 # Config.in and external.mk from the BR2_EXTERNAL directory. In this case,
 126 # override is necessary so the user can clear BR2_EXTERNAL from the command
 127 # line, but the dummy path is still used internally.
 128
 129 BR2_EXTERNAL_FILE = $(BASE_DIR)/.br-external
 130 -include $(BR2_EXTERNAL_FILE)
 131 ifeq ($(BR2_EXTERNAL),)
 132   override BR2_EXTERNAL = support/dummy-external
 133   $(shell rm -f $(BR2_EXTERNAL_FILE))
 134 else
 135   _BR2_EXTERNAL = $(shell cd $(BR2_EXTERNAL) >/dev/null 2>&1 && pwd)
 136   ifeq ($(_BR2_EXTERNAL),)
 137     $(error BR2_EXTERNAL='$(BR2_EXTERNAL)' does not exist, relative to $(TOPDIR))
 138   endif
 139   override BR2_EXTERNAL := $(_BR2_EXTERNAL)
 140   $(shell echo BR2_EXTERNAL ?= $(BR2_EXTERNAL) > $(BR2_EXTERNAL_FILE))
 141 endif
 142
 143 # To make sure the the environment variable overrides the .config option,
 144 # set this before including .config.
 145 ifneq ($(BR2_DL_DIR),)
 146 DL_DIR := $(BR2_DL_DIR)
 147 endif
 148
 149
 150 # Need that early, before we scan packages
 151 # Avoids doing the $(or...) everytime
 152 BR_GRAPH_OUT := $(or $(BR2_GRAPH_OUT),pdf)
 153 BR_GRAPH_DEPTH := $(or $(BR2_GRAPH_DEPTH),0)
 154
 155 BUILD_DIR:=$(BASE_DIR)/build
 156 BINARIES_DIR:=$(BASE_DIR)/images
 157 TARGET_DIR:=$(BASE_DIR)/target
 158 # initial definition so that 'make clean' works for most users, even without
 159 # .config. HOST_DIR will be overwritten later when .config is included.
 160 HOST_DIR:=$(BASE_DIR)/host
 161
 162 LEGAL_INFO_DIR=$(BASE_DIR)/legal-info
 163 REDIST_SOURCES_DIR_TARGET=$(LEGAL_INFO_DIR)/sources
 164 REDIST_SOURCES_DIR_HOST=$(LEGAL_INFO_DIR)/host-sources
 165 LICENSE_FILES_DIR_TARGET=$(LEGAL_INFO_DIR)/licenses
 166 LICENSE_FILES_DIR_HOST=$(LEGAL_INFO_DIR)/host-licenses
 167 LEGAL_MANIFEST_CSV_TARGET=$(LEGAL_INFO_DIR)/manifest.csv
 168 LEGAL_MANIFEST_CSV_HOST=$(LEGAL_INFO_DIR)/host-manifest.csv
 169 LEGAL_LICENSES_TXT_TARGET=$(LEGAL_INFO_DIR)/licenses.txt
 170 LEGAL_LICENSES_TXT_HOST=$(LEGAL_INFO_DIR)/host-licenses.txt
 171 LEGAL_WARNINGS=$(LEGAL_INFO_DIR)/.warnings
 172 LEGAL_REPORT=$(LEGAL_INFO_DIR)/README
 173
 174 BR2_CONFIG=$(CONFIG_DIR)/.config
 175
 176 # Pull in the user's configuration file
 177 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
 178 -include $(BR2_CONFIG)
 179 endif
 180
 181 # To put more focus on warnings, be less verbose as default
 182 # Use 'make V=1' to see the full commands
 183 ifdef V
 184   ifeq ("$(origin V)", "command line")
 185     KBUILD_VERBOSE=$(V)
 186   endif
 187 endif
 188 ifndef KBUILD_VERBOSE
 189   KBUILD_VERBOSE=0
 190 endif
 191
 192 ifeq ($(KBUILD_VERBOSE),1)
 193   quiet=
 194   Q=
 195 ifndef VERBOSE
 196   VERBOSE=1
 197 endif
 198 else
 199   quiet=quiet_
 200   Q=@
 201 endif
 202
 203 # we want bash as shell
 204 SHELL:=$(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 205         else if [ -x /bin/bash ]; then echo /bin/bash; \
 206         else echo sh; fi; fi)
 207
 208 # kconfig uses CONFIG_SHELL
 209 CONFIG_SHELL:=$(SHELL)
 210
 211 export SHELL CONFIG_SHELL quiet Q KBUILD_VERBOSE VERBOSE
 212
 213 ifndef HOSTAR
 214 HOSTAR:=ar
 215 endif
 216 ifndef HOSTAS
 217 HOSTAS:=as
 218 endif
 219 ifndef HOSTCC
 220 HOSTCC:=gcc
 221 HOSTCC:=$(shell which $(HOSTCC) || type -p $(HOSTCC) || echo gcc)
 222 endif
 223 HOSTCC_NOCCACHE:=$(HOSTCC)
 224 ifndef HOSTCXX
 225 HOSTCXX:=g++
 226 HOSTCXX:=$(shell which $(HOSTCXX) || type -p $(HOSTCXX) || echo g++)
 227 endif
 228 HOSTCXX_NOCCACHE:=$(HOSTCXX)
 229 ifndef HOSTFC
 230 HOSTFC:=gfortran
 231 endif
 232 ifndef HOSTCPP
 233 HOSTCPP:=cpp
 234 endif
 235 ifndef HOSTLD
 236 HOSTLD:=ld
 237 endif
 238 ifndef HOSTLN
 239 HOSTLN:=ln
 240 endif
 241 ifndef HOSTNM
 242 HOSTNM:=nm
 243 endif
 244 ifndef HOSTOBJCOPY
 245 HOSTOBJCOPY:=objcopy
 246 endif
 247 ifndef HOSTRANLIB
 248 HOSTRANLIB:=ranlib
 249 endif
 250 HOSTAR:=$(shell which $(HOSTAR) || type -p $(HOSTAR) || echo ar)
 251 HOSTAS:=$(shell which $(HOSTAS) || type -p $(HOSTAS) || echo as)
 252 HOSTFC:=$(shell which $(HOSTLD) || type -p $(HOSTLD) || echo || which g77 || type -p g77 || echo gfortran)
 253 HOSTCPP:=$(shell which $(HOSTCPP) || type -p $(HOSTCPP) || echo cpp)
 254 HOSTLD:=$(shell which $(HOSTLD) || type -p $(HOSTLD) || echo ld)
 255 HOSTLN:=$(shell which $(HOSTLN) || type -p $(HOSTLN) || echo ln)
 256 HOSTNM:=$(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
 257 HOSTOBJCOPY:=$(shell which $(HOSTOBJCOPY) || type -p $(HOSTOBJCOPY) || echo objcopy)
 258 HOSTRANLIB:=$(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranlib)
 259
 260 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTFC HOSTLD
 261 export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
 262
 263 # Make sure pkg-config doesn't look outside the buildroot tree
 264 unexport PKG_CONFIG_PATH
 265 unexport PKG_CONFIG_SYSROOT_DIR
 266 unexport PKG_CONFIG_LIBDIR
 267
 268 # Having DESTDIR set in the environment confuses the installation
 269 # steps of some packages.
 270 unexport DESTDIR
 271
 272 # Causes breakage with packages that needs host-ruby
 273 unexport RUBYOPT
 274
 275 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 276
 277 ################################################################################
 278 #
 279 # Hide troublesome environment variables from sub processes
 280 #
 281 ################################################################################
 282 unexport CROSS_COMPILE
 283 unexport ARCH
 284 unexport CC
 285 unexport CXX
 286 unexport CPP
 287 unexport CFLAGS
 288 unexport CXXFLAGS
 289 unexport GREP_OPTIONS
 290 unexport TAR_OPTIONS
 291 unexport CONFIG_SITE
 292 unexport QMAKESPEC
 293 unexport TERMINFO
 294
 295 GNU_HOST_NAME:=$(shell support/gnuconfig/config.guess)
 296
 297 TARGETS :=
 298
 299 # silent mode requested?
 300 QUIET:=$(if $(findstring s,$(MAKEFLAGS)),-q)
 301
 302 # Strip off the annoying quoting
 303 ARCH:=$(call qstrip,$(BR2_ARCH))
 304
 305 KERNEL_ARCH:=$(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 306         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 307         -e s/arcle/arc/ \
 308         -e s/arceb/arc/ \
 309         -e s/arm.*/arm/ -e s/sa110/arm/ \
 310         -e s/aarch64/arm64/ \
 311         -e s/bfin/blackfin/ \
 312         -e s/parisc64/parisc/ \
 313         -e s/powerpc64/powerpc/ \
 314         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 315         -e s/sh.*/sh/ \
 316         -e s/microblazeel/microblaze/)
 317
 318 ZCAT:=$(call qstrip,$(BR2_ZCAT))
 319 BZCAT:=$(call qstrip,$(BR2_BZCAT))
 320 XZCAT:=$(call qstrip,$(BR2_XZCAT))
 321 TAR_OPTIONS=$(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 322
 323 # packages compiled for the host go here
 324 HOST_DIR:=$(call qstrip,$(BR2_HOST_DIR))
 325
 326 # Quotes are needed for spaces and all in the original PATH content.
 327 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 328
 329 # locales to generate
 330 GENERATE_LOCALE=$(call qstrip,$(BR2_GENERATE_LOCALE))
 331
 332 TARGET_SKELETON=$(TOPDIR)/system/skeleton
 333
 334 # Location of a file giving a big fat warning that output/target
 335 # should not be used as the root filesystem.
 336 TARGET_DIR_WARNING_FILE=$(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 337
 338 ifeq ($(BR2_CCACHE),y)
 339 CCACHE:=$(HOST_DIR)/usr/bin/ccache
 340 BR_CACHE_DIR = $(call qstrip,$(BR2_CCACHE_DIR))
 341 export BR_CACHE_DIR
 342 HOSTCC  := $(CCACHE) $(HOSTCC)
 343 HOSTCXX := $(CCACHE) $(HOSTCXX)
 344 endif
 345
 346 # Scripts in support/ or post-build scripts may need to reference
 347 # these locations, so export them so it is easier to use
 348 export BR2_CONFIG
 349 export TARGET_DIR
 350 export STAGING_DIR
 351 export HOST_DIR
 352 export BINARIES_DIR
 353 export BASE_DIR
 354
 355 ################################################################################
 356 #
 357 # You should probably leave this stuff alone unless you know
 358 # what you are doing.
 359 #
 360 ################################################################################
 361
 362 all: world
 363
 364 # Include legacy before the other things, because package .mk files
 365 # may rely on it.
 366 ifneq ($(BR2_DEPRECATED),y)
 367 include Makefile.legacy
 368 endif
 369
 370 include package/Makefile.in
 371 include support/dependencies/dependencies.mk
 372
 373 # We also need the various per-package makefiles, which also add
 374 # each selected package to TARGETS if that package was selected
 375 # in the .config file.
 376 include toolchain/helpers.mk
 377 include toolchain/*/*.mk
 378
 379 # Include the package override file if one has been provided in the
 380 # configuration.
 381 PACKAGE_OVERRIDE_FILE=$(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 382 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 383 -include $(PACKAGE_OVERRIDE_FILE)
 384 endif
 385
 386 include $(sort $(wildcard package/*/*.mk))
 387
 388 include boot/common.mk
 389 include linux/linux.mk
 390 include system/system.mk
 391
 392 include $(BR2_EXTERNAL)/external.mk
 393
 394 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 395 TARGETS+=target-purgelocales
 396 endif
 397
 398 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 399 ifneq ($(GENERATE_LOCALE),)
 400 TARGETS+=target-generatelocales
 401 endif
 402 endif
 403
 404 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 405 TARGETS+=toolchain-eclipse-register
 406 endif
 407
 408 include fs/common.mk
 409
 410 TARGETS_SOURCE:=$(patsubst %,%-source,$(TARGETS))
 411 TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))
 412
 413 # host-* dependencies have to be handled specially, as those aren't
 414 # visible in Kconfig and hence not added to a variable like TARGETS.
 415 # instead, find all the host-* targets listed in each <PKG>_DEPENDENCIES
 416 # variable for each enabled target.
 417 # Notice: this only works for newstyle gentargets/autotargets packages
 418 TARGETS_HOST_DEPS = $(sort $(filter host-%,$(foreach dep,\
 419                 $(addsuffix _DEPENDENCIES,\
 420                         $(call UPPERCASE,$(TARGETS) $(TARGETS_ROOTFS))),\
 421                 $($(dep)))))
 422 # Host packages can in turn have their own dependencies. Likewise find
 423 # all the package names listed in the HOST_<PKG>_DEPENDENCIES for each
 424 # host package found above. Ideally this should be done recursively until
 425 # no more packages are found, but that's hard to do in make, so limit to
 426 # 1 level for now.
 427 HOST_DEPS = $(sort $(foreach dep,\
 428                 $(addsuffix _DEPENDENCIES,$(call UPPERCASE,$(TARGETS_HOST_DEPS))),\
 429                 $($(dep))))
 430 HOST_SOURCE += $(addsuffix -source,$(sort $(TARGETS_HOST_DEPS) $(HOST_DEPS)))
 431
 432 TARGETS_LEGAL_INFO:=$(patsubst %,%-legal-info,\
 433                 $(TARGETS) $(TARGETS_HOST_DEPS) $(HOST_DEPS))))
 434
 435 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 436         $(HOST_DIR) $(BINARIES_DIR)
 437
 438 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 439         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 440
 441 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 442
 443 # Add base dependencies to all targets even on those not based on the
 444 # package framework.
 445 $(TARGETS): dirs prepare dependencies
 446
 447 world: target-post-image
 448
 449 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 450         legal-info legal-info-prepare legal-info-clean printvars \
 451         target-finalize target-post-image \
 452         $(TARGETS) $(TARGETS_ROOTFS) \
 453         $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) $(TARGETS_LEGAL_INFO) \
 454         $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 455         $(HOST_DIR) $(BINARIES_DIR)
 456
 457 ################################################################################
 458 #
 459 # staging and target directories do NOT list these as
 460 # dependencies anywhere else
 461 #
 462 ################################################################################
 463 $(BUILD_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST):
 464         @mkdir -p $@
 465
 466 # We make a symlink lib32->lib or lib64->lib as appropriate
 467 # MIPS64/n32 requires lib32 even though it's a 64-bit arch.
 468 ifeq ($(BR2_ARCH_IS_64)$(BR2_MIPS_NABI32),y)
 469 LIB_SYMLINK = lib64
 470 else
 471 LIB_SYMLINK = lib32
 472 endif
 473
 474 $(STAGING_DIR):
 475         @mkdir -p $(STAGING_DIR)/bin
 476         @mkdir -p $(STAGING_DIR)/lib
 477         @ln -snf lib $(STAGING_DIR)/$(LIB_SYMLINK)
 478         @mkdir -p $(STAGING_DIR)/usr/lib
 479         @ln -snf lib $(STAGING_DIR)/usr/$(LIB_SYMLINK)
 480         @mkdir -p $(STAGING_DIR)/usr/include
 481         @mkdir -p $(STAGING_DIR)/usr/bin
 482         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 483
 484 ifeq ($(BR2_ROOTFS_SKELETON_CUSTOM),y)
 485 TARGET_SKELETON=$(BR2_ROOTFS_SKELETON_CUSTOM_PATH)
 486 endif
 487
 488 RSYNC_VCS_EXCLUSIONS = \
 489         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 490         --exclude CVS
 491
 492 $(BUILD_DIR)/.root:
 493         mkdir -p $(TARGET_DIR)
 494         rsync -a --ignore-times $(RSYNC_VCS_EXCLUSIONS) \
 495                 --chmod=Du+w --exclude .empty --exclude '*~' \
 496                 $(TARGET_SKELETON)/ $(TARGET_DIR)/
 497         $(INSTALL) -m 0644 support/misc/target-dir-warning.txt $(TARGET_DIR_WARNING_FILE)
 498         @ln -snf lib $(TARGET_DIR)/$(LIB_SYMLINK)
 499         @mkdir -p $(TARGET_DIR)/usr
 500         @ln -snf lib $(TARGET_DIR)/usr/$(LIB_SYMLINK)
 501         touch $@
 502
 503 $(TARGET_DIR): $(BUILD_DIR)/.root
 504
 505 STRIP_FIND_CMD = find $(TARGET_DIR)
 506 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 507 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 508 endif
 509 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 510 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print
 511
 512 $(TARGETS_ROOTFS): target-finalize
 513
 514 target-finalize: $(TARGETS)
 515         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 516                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 517                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 518         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 519         find $(TARGET_DIR)/lib \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 520         find $(TARGET_DIR)/usr/lib \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 521 ifneq ($(BR2_PACKAGE_GDB),y)
 522         rm -rf $(TARGET_DIR)/usr/share/gdb
 523 endif
 524         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 525         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 526         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 527         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 528         -rmdir $(TARGET_DIR)/usr/share 2>/dev/null
 529 ifeq ($(BR2_PACKAGE_PYTHON_PY_ONLY)$(BR2_PACKAGE_PYTHON3_PY_ONLY),y)
 530         find $(TARGET_DIR)/usr/lib/ -name '*.pyc' -print0 | xargs -0 rm -f
 531 endif
 532 ifeq ($(BR2_PACKAGE_PYTHON_PYC_ONLY)$(BR2_PACKAGE_PYTHON3_PYC_ONLY),y)
 533         find $(TARGET_DIR)/usr/lib/ -name '*.py' -print0 | xargs -0 rm -f
 534 endif
 535         rm -rf $(TARGET_DIR)/usr/lib/luarocks
 536         $(STRIP_FIND_CMD) | xargs $(STRIPCMD) 2>/dev/null || true
 537         if test -d $(TARGET_DIR)/lib/modules; then \
 538                 find $(TARGET_DIR)/lib/modules -type f -name '*.ko' | \
 539                 xargs -r $(KSTRIPCMD); fi
 540
 541 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 542 # besides the one in which crash occurred; or SIGTRAP kills my program when
 543 # I set a breakpoint"
 544 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 545         find $(TARGET_DIR)/lib -type f -name 'libpthread*.so*' | \
 546                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 547 endif
 548
 549         mkdir -p $(TARGET_DIR)/etc
 550         # Mandatory configuration file and auxilliary cache directory
 551         # for recent versions of ldconfig
 552         touch $(TARGET_DIR)/etc/ld.so.conf
 553         mkdir -p $(TARGET_DIR)/var/cache/ldconfig
 554         if [ -x "$(TARGET_CROSS)ldconfig" ]; \
 555         then \
 556                 $(TARGET_CROSS)ldconfig -r $(TARGET_DIR); \
 557         else \
 558                 /sbin/ldconfig -r $(TARGET_DIR); \
 559         fi
 560         ( \
 561                 echo "NAME=Buildroot"; \
 562                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 563                 echo "ID=buildroot"; \
 564                 echo "VERSION_ID=$(BR2_VERSION)"; \
 565                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 566         ) >  $(TARGET_DIR)/etc/os-release
 567
 568         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 569                 $(call MESSAGE,"Copying overlay $(d)"); \
 570                 rsync -a --ignore-times $(RSYNC_VCS_EXCLUSIONS) \
 571                         --chmod=Du+w --exclude .empty --exclude '*~' \
 572                         $(d)/ $(TARGET_DIR)$(sep))
 573
 574         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 575                 $(call MESSAGE,"Executing post-build script $(s)"); \
 576                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 577
 578 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 579 LOCALE_WHITELIST=$(BUILD_DIR)/locales.nopurge
 580 LOCALE_NOPURGE=$(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 581
 582 target-purgelocales:
 583         rm -f $(LOCALE_WHITELIST)
 584         for i in $(LOCALE_NOPURGE); do echo $$i >> $(LOCALE_WHITELIST); done
 585
 586         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/man /usr/share/man /usr/lib/locale)); \
 587         do \
 588                 for lang in $$(cd $$dir; ls .|grep -v man); \
 589                 do \
 590                         grep -qx $$lang $(LOCALE_WHITELIST) || rm -rf $$dir/$$lang; \
 591                 done; \
 592         done
 593 endif
 594
 595 ifneq ($(GENERATE_LOCALE),)
 596 # Generate locale data. Basically, we call the localedef program
 597 # (built by the host-localedef package) for each locale. The input
 598 # data comes preferably from the toolchain, or if the toolchain does
 599 # not have them (Linaro toolchains), we use the ones available on the
 600 # host machine.
 601 target-generatelocales: host-localedef toolchain
 602         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 603         $(Q)for locale in $(GENERATE_LOCALE) ; do \
 604                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 605                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 606                 if test -z "$${charmap}" ; then \
 607                         charmap="UTF-8" ; \
 608                 fi ; \
 609                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 610                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 611                 $(HOST_DIR)/usr/bin/localedef \
 612                         --prefix=$(TARGET_DIR) \
 613                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 614                         -i $${inputfile} -f $${charmap} \
 615                         $${locale} ; \
 616         done
 617 endif
 618
 619 target-post-image: $(TARGETS_ROOTFS) target-finalize
 620         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 621                 $(call MESSAGE,"Executing post-image script $(s)"); \
 622                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 623
 624 toolchain-eclipse-register: toolchain
 625         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 626
 627 source: $(TARGETS_SOURCE) $(HOST_SOURCE)
 628
 629 external-deps:
 630         @$(MAKE1) -Bs DL_MODE=SHOW_EXTERNAL_DEPS $(EXTRAMAKEARGS) source | sort -u
 631
 632 legal-info-clean:
 633         @rm -fr $(LEGAL_INFO_DIR)
 634
 635 legal-info-prepare: $(LEGAL_INFO_DIR)
 636         @$(call MESSAGE,"Collecting legal info")
 637         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 638         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,TARGET)
 639         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,HOST)
 640         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,HOST)
 641         @$(call legal-warning,the Buildroot source code has not been saved)
 642         @$(call legal-warning,the toolchain has not been saved)
 643         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 644
 645 legal-info: dirs legal-info-clean legal-info-prepare $(TARGETS_LEGAL_INFO) \
 646                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 647         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 648         @if [ -r $(LEGAL_WARNINGS) ]; then \
 649                 cat support/legal-info/README.warnings-header \
 650                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 651                 cat $(LEGAL_WARNINGS); fi
 652         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 653         @rm -f $(LEGAL_WARNINGS)
 654
 655 show-targets:
 656         @echo $(TARGETS) $(TARGETS_ROOTFS)
 657
 658 graph-build: $(O)/build/build-time.log
 659         @install -d $(O)/graphs
 660         $(foreach o,name build duration,./support/scripts/graph-build-time \
 661                                         --type=histogram --order=$(o) --input=$(<) \
 662                                         --output=$(O)/graphs/build.hist-$(o).$(BR_GRAPH_OUT) \
 663                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 664         $(foreach t,packages steps,./support/scripts/graph-build-time \
 665                                    --type=pie-$(t) --input=$(<) \
 666                                    --output=$(O)/graphs/build.pie-$(t).$(BR_GRAPH_OUT) \
 667                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 668
 669 graph-depends:
 670         @$(INSTALL) -d $(O)/graphs
 671         @cd "$(CONFIG_DIR)"; \
 672         $(TOPDIR)/support/scripts/graph-depends -d $(BR_GRAPH_DEPTH) \
 673         |tee $(O)/graphs/$(@).dot \
 674         |dot -T$(BR_GRAPH_OUT) -o $(O)/graphs/$(@).$(BR_GRAPH_OUT)
 675
 676 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 677
 678 all: menuconfig
 679
 680 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 681
 682 # configuration
 683 # ---------------------------------------------------------------------------
 684
 685 HOSTCFLAGS=$(CFLAGS_FOR_BUILD)
 686 export HOSTCFLAGS
 687
 688 $(BUILD_DIR)/buildroot-config/%onf:
 689         mkdir -p $(@D)/lxdialog
 690         $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 691
 692 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 693
 694 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 695 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 696 COMMON_CONFIG_ENV = \
 697         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 698         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 699         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 700         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 701         BR2_CONFIG=$(BR2_CONFIG) \
 702         BR2_EXTERNAL=$(BR2_EXTERNAL)
 703
 704 xconfig: $(BUILD_DIR)/buildroot-config/qconf outputmakefile
 705         @mkdir -p $(BUILD_DIR)/buildroot-config
 706         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 707
 708 gconfig: $(BUILD_DIR)/buildroot-config/gconf outputmakefile
 709         @mkdir -p $(BUILD_DIR)/buildroot-config
 710         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 711
 712 menuconfig: $(BUILD_DIR)/buildroot-config/mconf outputmakefile
 713         @mkdir -p $(BUILD_DIR)/buildroot-config
 714         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 715
 716 nconfig: $(BUILD_DIR)/buildroot-config/nconf outputmakefile
 717         @mkdir -p $(BUILD_DIR)/buildroot-config
 718         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 719
 720 config: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 721         @mkdir -p $(BUILD_DIR)/buildroot-config
 722         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 723
 724 oldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 725         mkdir -p $(BUILD_DIR)/buildroot-config
 726         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 727
 728 randconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 729         @mkdir -p $(BUILD_DIR)/buildroot-config
 730         @$(COMMON_CONFIG_ENV) $< --randconfig $(CONFIG_CONFIG_IN)
 731
 732 allyesconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 733         @mkdir -p $(BUILD_DIR)/buildroot-config
 734         @$(COMMON_CONFIG_ENV) $< --allyesconfig $(CONFIG_CONFIG_IN)
 735
 736 allnoconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 737         @mkdir -p $(BUILD_DIR)/buildroot-config
 738         @$(COMMON_CONFIG_ENV) $< --allnoconfig $(CONFIG_CONFIG_IN)
 739
 740 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 741         @mkdir -p $(BUILD_DIR)/buildroot-config
 742         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 743         @grep '^config BR2_PACKAGE_' Config.in.legacy | \
 744                 while read config pkg; do \
 745                 echo "# $$pkg is not set" >> $(CONFIG_DIR)/.config.nopkg; done
 746         @$(COMMON_CONFIG_ENV) \
 747                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 748                 $< --randconfig $(CONFIG_CONFIG_IN)
 749         @rm -f $(CONFIG_DIR)/.config.nopkg
 750
 751 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 752         @mkdir -p $(BUILD_DIR)/buildroot-config
 753         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 754         @grep '^config BR2_PACKAGE_' Config.in.legacy | \
 755                 while read config pkg; do \
 756                 echo "# $$pkg is not set" >> $(CONFIG_DIR)/.config.nopkg; done
 757         @$(COMMON_CONFIG_ENV) \
 758                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 759                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 760         @rm -f $(CONFIG_DIR)/.config.nopkg
 761
 762 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 763         @mkdir -p $(BUILD_DIR)/buildroot-config
 764         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 765         @$(COMMON_CONFIG_ENV) \
 766                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 767                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 768         @rm -f $(CONFIG_DIR)/.config.nopkg
 769
 770 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 771         @mkdir -p $(BUILD_DIR)/buildroot-config
 772         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 773
 774 olddefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 775         @mkdir -p $(BUILD_DIR)/buildroot-config
 776         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 777
 778 defconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 779         @mkdir -p $(BUILD_DIR)/buildroot-config
 780         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 781
 782 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(TOPDIR)/configs/%_defconfig outputmakefile
 783         @mkdir -p $(BUILD_DIR)/buildroot-config
 784         @$(COMMON_CONFIG_ENV) $< --defconfig=$(TOPDIR)/configs/$@ $(CONFIG_CONFIG_IN)
 785
 786 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(BR2_EXTERNAL)/configs/%_defconfig outputmakefile
 787         @mkdir -p $(BUILD_DIR)/buildroot-config
 788         @$(COMMON_CONFIG_ENV) $< --defconfig=$(BR2_EXTERNAL)/configs/$@ $(CONFIG_CONFIG_IN)
 789
 790 savedefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 791         @mkdir -p $(BUILD_DIR)/buildroot-config
 792         @$(COMMON_CONFIG_ENV) $< \
 793                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 794                 $(CONFIG_CONFIG_IN)
 795
 796 # check if download URLs are outdated
 797 source-check:
 798         $(MAKE1) DL_MODE=SOURCE_CHECK $(EXTRAMAKEARGS) source
 799
 800 .PHONY: defconfig savedefconfig
 801
 802 ################################################################################
 803 #
 804 # Cleanup and misc junk
 805 #
 806 ################################################################################
 807
 808 # outputmakefile generates a Makefile in the output directory, if using a
 809 # separate output directory. This allows convenient use of make in the
 810 # output directory.
 811 outputmakefile:
 812 ifeq ($(NEED_WRAPPER),y)
 813         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 814 endif
 815
 816 # printvars prints all the variables currently defined in our Makefiles
 817 printvars:
 818         @$(foreach V, \
 819                 $(sort $(.VARIABLES)), \
 820                 $(if $(filter-out environment% default automatic, \
 821                                 $(origin $V)), \
 822                 $(info $V=$($V) ($(value $V)))))
 823
 824 clean:
 825         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 826                 $(BUILD_DIR) $(BASE_DIR)/staging \
 827                 $(LEGAL_INFO_DIR)
 828
 829 distclean: clean
 830 ifeq ($(DL_DIR),$(TOPDIR)/dl)
 831         rm -rf $(DL_DIR)
 832 endif
 833 ifeq ($(O),output)
 834         rm -rf $(O)
 835 endif
 836         rm -rf $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/.auto.deps
 837
 838 help:
 839         @echo 'Cleaning:'
 840         @echo '  clean                  - delete all files created by build'
 841         @echo '  distclean              - delete all non-source files (including .config)'
 842         @echo
 843         @echo 'Build:'
 844         @echo '  all                    - make world'
 845         @echo '  toolchain              - build toolchain'
 846         @echo '  <package>-rebuild      - force recompile <package>'
 847         @echo '  <package>-reconfigure  - force reconfigure <package>'
 848         @echo '  <package>-graph-depends    - generate graph of the dependency tree for package'
 849         @echo
 850         @echo 'Configuration:'
 851         @echo '  menuconfig             - interactive curses-based configurator'
 852         @echo '  nconfig                - interactive ncurses-based configurator'
 853         @echo '  xconfig                - interactive Qt-based configurator'
 854         @echo '  gconfig                - interactive GTK-based configurator'
 855         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 856         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 857         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 858         @echo '  randconfig             - New config with random answer to all options'
 859         @echo '  defconfig              - New config with default answer to all options'
 860         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 861         @echo '  savedefconfig          - Save current config as ./defconfig (minimal config)'
 862         @echo '  allyesconfig           - New config where all options are accepted with yes'
 863         @echo '  allnoconfig            - New config where all options are answered with no'
 864         @echo '  randpackageconfig      - New config with random answer to package options'
 865         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 866         @echo '  allnopackageconfig     - New config where package options are answered with no'
 867 ifeq ($(BR2_PACKAGE_BUSYBOX),y)
 868         @echo '  busybox-menuconfig     - Run BusyBox menuconfig'
 869 endif
 870 ifeq ($(BR2_LINUX_KERNEL),y)
 871         @echo '  linux-menuconfig       - Run Linux kernel menuconfig'
 872         @echo '  linux-savedefconfig    - Run Linux kernel savedefconfig'
 873 endif
 874 ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
 875         @echo '  uclibc-menuconfig      - Run uClibc menuconfig'
 876 endif
 877 ifeq ($(BR2_TARGET_BAREBOX),y)
 878         @echo '  barebox-menuconfig     - Run barebox menuconfig'
 879         @echo '  barebox-savedefconfig  - Run barebox savedefconfig'
 880 endif
 881         @echo
 882         @echo 'Documentation:'
 883         @echo '  manual                 - build manual in all formats'
 884         @echo '  manual-html            - build manual in HTML'
 885         @echo '  manual-split-html      - build manual in split HTML'
 886         @echo '  manual-pdf             - build manual in PDF'
 887         @echo '  manual-text            - build manual in text'
 888         @echo '  manual-epub            - build manual in ePub'
 889         @echo '  graph-build            - generate graphs of the build times'
 890         @echo '  graph-depends          - generate graph of the dependency tree'
 891         @echo
 892         @echo 'Miscellaneous:'
 893         @echo '  source                 - download all sources needed for offline-build'
 894         @echo '  source-check           - check selected packages for valid download URLs'
 895         @echo '  external-deps          - list external packages used'
 896         @echo '  legal-info             - generate info about license compliance'
 897         @echo
 898         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
 899         @echo '  make O=dir             - Locate all output files in "dir", including .config'
 900         @echo
 901         @echo 'Built-in configs:'
 902         @$(foreach b, $(sort $(notdir $(wildcard $(TOPDIR)/configs/*_defconfig))), \
 903           printf "  %-35s - Build for %s\\n" $(b) $(b:_defconfig=);)
 904 ifneq ($(wildcard $(BR2_EXTERNAL)/configs/*_defconfig),)
 905         @echo
 906         @echo 'User-provided configs:'
 907         @$(foreach b, $(sort $(notdir $(wildcard $(BR2_EXTERNAL)/configs/*_defconfig))), \
 908           printf "  %-35s - Build for %s\\n" $(b) $(b:_defconfig=);)
 909 endif
 910         @echo
 911         @echo 'See docs/README, or generate the Buildroot manual for further details'
 912         @echo
 913
 914 release: OUT=buildroot-$(BR2_VERSION)
 915
 916 # Create release tarballs. We need to fiddle a bit to add the generated
 917 # documentation to the git output
 918 release:
 919         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
 920         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
 921         tar rf $(OUT).tar $(OUT)
 922         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
 923         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
 924         rm -rf $(OUT) $(OUT).tar
 925
 926 print-version:
 927         @echo $(BR2_VERSION_FULL)
 928
 929 include docs/manual/manual.mk
 930
 931 .PHONY: $(noconfig_targets)